Kill Dengue Fever
How Insects Make Us Sick
There are two primary ways that insects transmit disease. The first is mechanical transmission. Similar to how humans track outdoor dirt and mud from unclean shoes into a home, flies and other insects can carry millions of microorganisms on their feet, which are harmful to humans. With enough exposure, diseases can be passed onto humans. Insects can pick up contamination from such things as feces and other harmful environments. When insects land on our food, or when we are bitten, the opportunity for transmission of diseases is evident. It is on these occasions that deadly illnesses such as typhoid, dysentery, or even cholera are contracted.
The second way insects can make us sick is through bites. Some of the world’s deadliest diseases such as malaria, dengue fever, yellow fever and west nile virus are passed on in this manner. All together several million deaths occur every year from these threats. Insect bites can affect animals in our communities as well as humans.
The overuse of pesticides has been a significant factor in the resurgence of insect-borne diseases. Insects have adapted to many types of common pest prevention methods making them harder to control.
Changes in the world climate also contribute to the spread of pests and diseases. Insects seeking cooler climates have moved into areas populated by larger communities of people. Rains and floods leave stagnant waters, which provide perfect conditions suitable for insect reproduction. The increased breeding cycle increases the population of both insects and the microorganisms they carry.
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